I love this visualization! Especially the metaphor that two sides of the cuboid give different "views" of the same ideal object that is inside the cube. What

I love this visualization! Especially the metaphor that two sides of the cuboid give different "views" of the same ideal object that is inside the cube. What would one show in the upper face? Some comments on this awesome program: 1. A beautiful feature is that you can see the projection of the whole function into the complex plane. However, this visualization is difficult to see for both the frequency and time domains at the same time. 2. After some time playing with the curves, I'd like to see both sides on a flat surface. This would break the metaphor, but maybe consider an option for "unfolding" the cube to see all these visualizations at the sime time? 3. Could you add new functions? at least the Dirichlet and Fejer kernels, or even some fractal-like stuff (lacunary series, random phase noise, dubois raymond examples, etc).